D vs Go in real life

[Kagamin]

Heh, from http://research.swtch.com/interfaces
> Among other metadata, the type description structure contains a 
> list of the methods implemented by that type. Similarly, the 
> compiler generates a (different) type description structure for 
> each interface type like Stringer; it too contains a method 
> list. The interface runtime computes the itable by looking for 
> each method listed in the interface type's method table in the 
> concrete type's method table.

So methods are tightly coupled with types after all. Doesn't look 
like what go claims about decoupling types and methods.